Spark-arrester



(No Model.)

J. D. GONNBLL.

SPARK ARRESTER.

No. 339,268. Patented Apr. 6, 1886.

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NTTED STATES PATENT OEETCE.

JAMES D. CONNELL, OF NEV ORLEANS, LOUISIANA.

SPARK-ARRESTER.

SPEGEFCATION forming part of Letters Patent No. 339,268, dated April 6, 1886.

(No model.)

T0 all whom t may concern:

Be it known that I, JAMES D. CONNELL, a citizen of the United States, and a resident of the city of New Orleans, in the parish of Orleans and State of Louisiana, have invented a new and useful Improvement in Spark-Arresters for Locomotives, of which the following is a speciiication.

My invention relates to spark-arresters for locomotives which have a short smoke-box; and the objects of my invention are, first, to afford facilities by which locomotives equipped with a short smokebox can be provided with an effective Spark-arrester without extending the smoke-box5 second, to provide ameans by which locomotives having a short smoke-box can be equipped With a straight sheet-iron stack Without extendingthe smoke-box, which replaces a heavy cast-iron diamond stack and materially reducing the weight of front of engine resting on engine-trucks, as also reduces the cost of construction; third, to afford facilities by which the combustion in locomotives equipped with a short smoke-box is materiall y improved, consequently the consumption of fuel is reduced, which fact is substantially and unequivocally demonstrated by the experiments and comparisons I have made; fourth, to aiford facilities by which no cinders can accumulate in the smoke-box, rendering any devices for daily cleaning unnecessary; fifth, to provide a means by which the openings of exliaust-nozzles can be reduced or enlarged at pleasure; sixth, to afford facilities by which a locomotive having a short box can be equipped with a most effective spark-arrester, which improves the combustion with but nominal expense, as also reduces the Weight on front end of engine; seventh, to provide a means by which all the parts of my device can be taken ont and replaced with ease and dispatch. I attain these obj ects by the mechanism illustrated in the accompanying drawings, in which- Figure l is an end View of a locomotive equipped with my device, with the front door ot'smokebox removed; and Fig. 2 is a longitudinal section through center of smoke-box. Fig. 3 is a detail of exhaust-nozzles on an enlarged scale.

Similar letters refer to similar parts throughout the several views.

The steam-pipes S, connecting the dry-pi pe D and steam-ports P of cylinder, are shaped to be placed against the sides of smoke-box, as shown. Abaflling-plate, B, placed on an angle, as shown, is secured by the angle-bar a to the front tube-sheet, t, of boiler. This bafiiingplate B is constructed in two sections and secured together by bolts placed in the slots s, so that the distance from bottom ot' baffling-plate to bottom of smoke-box can be regulated as may be desired. The wire-netting N is placed as shown on the drawings, it being secured by the angle-iron?? to the baffling-plate B, and by the angle-iron o to the sheet-iron cover c. The sheet-iron cover c is secured to the inside of front frame of smoke-box, as shown, and has a hand-hole, l1., in same to enable the workmen to secure nuts, die., in erecting the device, as also to alter size of exhaust-nozzles E. The exhaustnozzles E are made of wrought-iron tubing, to economize space and weight, and are secured by the set-screw c to the casting g, which is secured to top of exhaust-ports X of cylinder. The set-screw c lits into a recess, m, Fig. 3, turned in the pipe or cxhaustnozzle E, to keep same in position.

The netting N is secured around the exhaustppes E by the plate p. The netting N being of sufficient iineness to prevent large cinders from passing same, these large cinders are drawn against the netting N with sufiicient lforce to break them up,\vl1en they pass through same and out of stack in iiuc particles.

A bushing, I, is placed in top end ofthe exhaust-nozzles E, and is secured by the setscrew n, fitting in the recess r, turned in the bushing b, as shown. The internal diameter ofthis bushing b can be of any size desired, and the size ot' opening from exhaust-nozzles can be changed, when desired, by changing this bushing, which operation can bc easily and quickly performed by means of the set-screw 1' and hand-hole 7L, the bottom edge of pipes E and bushing b being beveled, as shown, to reduce friction.

H represents a straight sheet-iron stack.

T represents the tubes in the boiler.

Actual use of the device and comparison of the results of same with the same engine before being equipped has demonstrated the following facts: The engine equipped with this device steams very much easier and produces improved combustion, which is demonstrated IOO by the saving of at least twenty-five one-hundredths in fuel, and the engine throws no sparks. No cinders collect in front smokeboX, which never requires cleaning out.

My device can be placed in any short smokeboX Without requiring any change of steampipes or other parts except the heavy cast-iron exhaustnozzles,'which are replaced by light wrought-iron pipes.

Having thus described the construction and advantages of my improvedspark-arrester for locomotives equipped with short smoke-boxes, I claim as new and desireto secure by Letters Patent- I. In a spark-arrester for locomotives, the combination of a short smoke-box with the baffling-plates B, secured by angleiron a to fronttubefsheet, t, of boiler, and constructed in two sections and secured together by bolts cess m, and bushing b, set-screw n, and recess 3o r, all substantially asset forth.

J. D. CONNELL.

fitnessesz IVA LTER` TURNBULL, L. W. BROWN. 

